SkSLHLSLCodeGenerator.cpp

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/*
 * Copyright 2020 Google LLC
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#include "src/sksl/codegen/SkSLHLSLCodeGenerator.h"
 
#include "include/private/base/SkDebug.h"
#include "src/core/SkTraceEvent.h"
#include "src/sksl/SkSLContext.h"  // IWYU pragma: keep
#include "src/sksl/SkSLErrorReporter.h"
#include "src/sksl/SkSLOutputStream.h"
#include "src/sksl/SkSLPosition.h"
#include "src/sksl/codegen/SkSLSPIRVCodeGenerator.h"
#include "src/sksl/codegen/SkSLSPIRVtoHLSL.h"
#include "src/sksl/ir/SkSLProgram.h"
 
#include <cstdint>
#include <memory>
#include <type_traits>
 
namespace SkSL {
 
bool ToHLSL(Program& program, const ShaderCaps* caps, OutputStream& out) {
    TRACE_EVENT0("skia.shaders", "SkSL::ToHLSL");
    std::string hlsl;
    if (!ToHLSL(program, caps, &hlsl)) {
        return false;
    }
    out.writeString(hlsl);
    return true;
}
 
bool ToHLSL(Program& program, const ShaderCaps* caps, std::string* out) {
    std::string spirv;
    if (!ToSPIRV(program, caps, &spirv)) {
        return false;
    }
    if (!SPIRVtoHLSL(spirv, out)) {
        program.fContext->fErrors->error(Position(), "HLSL cross-compilation not enabled");
        return false;
    }
    return true;
}
 
}  // namespace SkSL